Web Results

en.wikipedia.org/wiki/Atmospheric_pressure

In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. As elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation. Pressure measures force per unit ...

en.wikipedia.org/wiki/Atmosphere_(unit)

The ata unit is used in place of atm to indicate that the pressure shown is the total ambient pressure, compared to vacuum, of the system being calculated or measured. For example, for underwater pressures, a pressure of 3.1 ata would mean that the 1 atm of the air above ...

units.wikia.com/wiki/Atmospheric_pressure

diurnal (daily) rhythm of air pressure in northern Germany (black curve is air pressure). Atmospheric pressure is the pressure above any area in the Earth's atmosphere caused by the weight of air. Standard atmospheric pressure (atm) is discussed in the relevant section.

www.wordplays.com/crossword-solver/atmospheric-pressure-unit

Answers for atmospheric-pressure-unit crossword clue. Search for crossword clues found in the Daily Celebrity, NY Times, Daily Mirror, Telegraph and major publications. Find clues for atmospheric-pressure-unit or most any crossword answer or clues for crossword answers.

www.windows2universe.org/earth/Atmosphere/measuring_press.html

Jun 11, 2010 ... As mentioned, a mercury barometer makes measurements in inches of Mercury ( in Hg). Pounds per square inch (abbreviated as p.s.i.) is common in the English system of units, and the pascal (abbreviated Pa) is the standard in the Metric (SI) system. Since the pressure exerted by Earth's atmosphere is of ...

www.britannica.com/science/standard-atmosphere-unit-of-measurement

standard atmosphere: Unit of pressure, equal to the mean atmospheric pressure at sea level. It corresponds to the pressure exerted by a vertical column of mercury (as in a barometer) 760 mm (29.9213...

www.britannica.com/science/atmospheric-pressure

Atmospheric pressure, also called barometric pressure, force per unit area exerted by an atmospheric column (that is, the entire body of air above the specified area). Atmospheric pressure can be measured with a mercury barometer (hence the commonly used synonym barometric pressure), which indicates the height of a ...

www.barometricpressureheadache.com/what-is-barometric-pressure

Pressure, The force applied to a unit area of surface. or rephrased, The force (per unit area) exerted on a surface by the gas (e.g.air) or liquid (e.g.water) in contact with it. Therefore, we can paraphrase the above explanation of 'pressure' to define both air and water pressure: Air Pressure, The force (per unit area) exerted by ...

www.sensorsone.com/atm-standard-atmosphere-pressure-unit

Standard Atmosphere is mainly used as a reference value for the average atmospheric pressure at sea level. It is often used to indicate the depth rating for a water resistant watch, but otherwise is rarely used as a unit for measuring pressure. 1 standard atmosphere is defined as being exactly equal to 101,325 pascals.